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Finding the Fourth Proportional to 444,647.52, 667,077.56 and 145,128.64

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Solution

The fourth proportional to 444,647.52, 667,077.56 and 145,128.64 is: 217,727.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,647.52 : 667,077.56 = 145,128.64 : x
  2. Step 2: Convert to fraction form
    444,647.52/667,077.56 = 145,128.64/x
  3. Step 3: Cross multiply
    444,647.52x = 667,077.56 × 145,128.64
  4. Step 4: Simplify right side
    444,647.52x = 96,812,059,057.32
  5. Step 5: Solve for x
    x = 96,812,059,057.32/444,647.52
  6. Step 6: Final answer
    x = 217,727.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.